The factors of the number 444,562,209 are: 1, 3, 7, 9, 13, 19, 21, 27, 39, 57, 63, 89, 91, 107, 117, 133, 171, 189, 247, 267, 273, 321, 351, 399, 513, 623, 741, 749, 801, 819, 963, 1157, 1197, 1391, 1691, 1729, 1869, 2033, 2223, 2247, 2403, 2457, 2889, 3471, 3591, 4173, 5073, 5187, 5607, 6099, 6669, 6741, 8099, 9523, 9737, 10413, 11837, 12519, 14231, 15219, 15561, 16821, 18297, 20223, 21983, 24297, 26429, 28569, 29211, 31239, 35511, 37557, 42693, 45657, 46683, 54891, 65949, 66661, 72891, 79287, 85707, 87633, 106533, 123799, 128079, 153881, 180937, 185003, 197847, 199983, 218673, 237861, 257121, 262899, 319599, 371397, 384237, 461643, 542811, 555009, 593541, 599949, 713583, 866593, 1114191, 1266559, 1384929, 1628433, 1665027, 1799847, 2352181, 2599779, 3342573, 3799677, 4154787, 4885299, 4995081, 7056543, 7799337, 11399031, 16465267, 21169629, 23398011, 34197093, 49395801, 63508887, 148187403, 444562209.
If you add them up, you will get the total of 870,912,000.